Harley Benton TUBE30 Head Guitar Amp Head User Manual

: June 14, 2024
: Harley Benton

Table of Contents

Harley Benton TUBE30 Head Guitar Amp Head
General information
Safety instructions
Features
Installation and starting up
Connections and operating elements
Technical specifications
Plug and connection assignment
Protecting the environment
References
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Harley Benton TUBE30 Head Guitar Amp Head

Harley-Benton-TUBE30-Head-Guitar-Amp-Head-product

TUBE30 Head Guitar Amp Head

General Information The TUBE30 Head is a guitar amp head designed for amplifying signals from musical instruments with electromagnetic pickups. It is important to use the device only as described in the user manual to avoid personal injury or property damage. The device should only be used by individuals with sufficient physical, sensorial, and intellectual abilities and who have the necessary knowledge and experience. Supervision or instruction by a responsible person is required for others using the device.

Safety Instructions

Intended Use This device is intended for the amplification of signals from musical instruments with electromagnetic pickups. Any other use or use under different operating conditions is considered improper and may result in personal injury or property damage. The manufacturer does not assume liability for damages resulting from improper use.

Safety DANGER! Danger for children. Ensure that plastic bags, packaging, etc. are disposed of properly and kept out of reach of babies and young children to prevent choking hazards. Children should not detach any small parts (e.g., knobs) from the unit as they could swallow them and choke. Electrical devices should never be used by children without supervision.

DANGER! Electric shock caused by high voltages inside. There are areas within the device where high voltages may be present. Never remove any covers, as there are no user-serviceable parts inside. Do not use the device if covers, protectors, or optical components are missing or damaged.

General information

This user manual contains important information on the safe operation of the device. Read and follow all safety notes and all instructions. Save this manual for future reference. Make sure that it is available to all persons using this device. If you sell the device to another user, be sure that they also receive this manual.
Our products and user manuals are subject to a process of continuous development. We therefore reserve the right to make changes without notice. Please refer to the latest version of the user manual which is ready for download under www.thomann.de.

Further information

On our website (www.thomann.de) you will find lots of further information and details on the following points:

Download	This manual is also available as a PDF file for you to download.
Keyword search	Use the search function in the electronic version to find the

topics of interest for you quickly.
Online guides| Our online guides provide detailed information on technical basics and terms.
Personal consultation| For personal consultation please contact our technical hotline.
Service| If you have any problems with the device the customer service will gladly assist you.

Notational conventions

This manual uses the following notational conventions:

Letterings

The letterings for connectors and controls are marked by square brackets and italics.
Examples: [VOLUME] control, [Mono] button.

Symbols and signal words

In this section, you will find an overview of the meaning of symbols and signal words that are used in this manual.

Signal word	Meaning
DANGER!	This combination of symbol and signal words indicates an

immediate dangerous situation that will result in death or serious injury if it is not avoided.
CAUTION!| This combination of symbol and signal word indicates a possible dangerous situation that can result in minor injury if it is not avoided.
NOTICE!| This combination of symbol and signal words indicates a possible dangerous situation that can result in material and environmental damage if it is not avoided.
Warning signs| Type of danger
---|---
| Warning – high-voltage.
| Warning – danger zone.

Safety instructions

Intended use

This device is intended to be used for the amplification of signals from musical instruments with electromagnetic pickups. Use the device only as described in this user manual. Any other use or use under other operating conditions is considered to be improper and may result in personal injury or property damage. No liability will be assumed for damages resulting from improper use. This device may be used only by persons with sufficient physical, sensorial, and intellectual abilities and having corresponding knowledge and experience. Other persons may use this device only if they are supervised or instructed by a person who is responsible for their safety.

Safety

DANGER!

Danger for children
Ensure that plastic bags, packaging, etc. are disposed of properly and are not within reach of babies and young children. Choking hazard! Ensure that children do not detach any small parts (e.g. knobs or the like) from the unit. They could swallow the pieces and choke! Never let children unattended use electrical devices.

DANGER!
Electric shock caused by high voltages inside
Within the device, there are areas where high voltages may be present. Never remove any covers. There are no user-serviceable parts inside. Do not use the device if covers, protectors or optical components are missing or damaged.

DANGER!
Electric shock caused by short-circuit
Do not modify the mains cable or the plug. Failure to do so could result in electric shock/death or fire. If in doubt, seek advice from a registered electrician.

CAUTION!
Possible hearing damage
With loudspeakers connected, the device can produce volume levels that may cause temporary or permanent hearing impairment.

Over an extended period of time, even levels that seem to be uncritical can cause hearing damage. Do not operate the device permanently at a high volume level. Decrease the volume level immediately if you experience ringing in your ears or hearing impairment. If this is not possible, keep a bigger distance to the speaker or use sufficient ear protectors.

NOTICE!
Risk of fire
Do not block areas of ventilation. Do not install the device near any direct heat source. Keep the device away from naked flames.

NOTICE!
Operating conditions
This device has been designed for indoor use only. To prevent damage, never expose the device to any liquid or moisture. Avoid direct sunlight, heavy dirt, and strong vibrations. Only operate the device within the ambient conditions specified in the chapter ‘Technical specifications’ of this user manual. Avoid heavy temperature fluctuations and do not switch the device on immediately after it is exposed to temperature fluctuations (for example after transport at low outside temperatures). Dust and dirt inside can damage the unit. When operated in harmful ambient conditions (dust, smoke, nicotine, fog, etc.), the unit should be maintained by qualified service personnel at regular intervals to prevent overheating and other malfunctions.

NOTICE!
Power supply
Before connecting the device, ensure that the input voltage (AC outlet) matches the voltage rating of the device and that the AC outlet is protected by a residual current circuit breaker. Failure to do so could result in damage to the device and possibly injure the user. Unplug the device before electrical storms occur and when it is unused for long periods of time to reduce the risk of electric shock or fire.
NOTICE!
Possible staining
The plasticiser contained in the rubber feet of this product may possibly react with the coating of your surface and after some time cause permanent dark stains. In case of doubt, do not put the rubber feet directly on the surface and use a suitable underlay if necessary, i.e. felt pads or similar.

Features

Output power: 30 watt at 8 Ω
Footswitch connector (not included)
Outputs for external speaker cabinet
Reverb effect
Further connections: Effects loop
Preamp tubes: 3 × ECC83/12AX7
Power amplifier tubes: 4 × EL84
Class A power amplifier

Installation and starting up

Unpack and check carefully there is no transportation damage before using the unit. Keep the equipment packaging. To fully protect the product against vibration, dust and moisture during transportation or storage use the original packaging or your own packaging material suitable for transport or storage, respectively.

Create all connections while the device is off. Use the shortest possible high-quality cables for all connections. Take care when running the cables to prevent tripping hazards.

NOTICE!
Possible property damage by magnetic fields Loudspeakers produce a static magnetic field. Therefore, maintain an appropriate distance to devices that can be adversely affected or damaged by an external magnetic field.

Connections and operating elements

Front

1| [INPUT] | 6.35-mm (1/4”) jack socket to connect an instrument. [LO] stands for low gain. The signal is attenuated by 50% from

[HI].

---|---
2| [CLEAN VOLUME] | Volume control for the clean channel
3| [BRIGHT] | Switch for tone control of the high and centre frequencies
4| [GAIN] | Control to adjust amplification
5| [OVERDRIVE VOLUME] | Volume control for the distorted channel
6| [CHANNEL SELECT] | Switch for selecting the distorted channel
7| [BASS] | Bass control

[MIDDLE] | Middle control

[TREBLE] | Treble control

---|---
8| [REVERB] | Reverb control
9| [TONE] | Tone control
10| [STANDBY] | Switch for keeping the tubes warm
11| [POWER] | Main switch with status LED (lights when the device is on)

Back

12	Power cord
13	Fuse
14	HT fuse
15	[EFFECTS LOOP: SEND/LINE OUT]

effects device
16| [BYPASS] | Switch for bypass if no effects device is in use. The effects device can also be operated with 0 dB (750 mV) or

-10 dB (250 mV).

17| [EFFECTS LOOP: FX RETURN] | Connection socket for output for effects device
18| [FOOTSWITCH] | Input socket for a footswitch (optional)
19| [LOUDSPEAKERS: 8 OHM] | External loudspeaker socket
20| [4 OHM | 8 OHM] | Impedance switch
---|---
21| [LOUDSPEAKERS: 8-16 OHM] | External loudspeaker socket

Technical specifications

Amp class	Class-A
Input connections	Instrument LO
Instrument HI	6.35-mm (1/4”) jack socket
Effects device	6.35-mm (1/4”) jack socket
Optional footswitch	6.35-mm (1/4”) jack socket
Internal speaker (min. impedance 4 Ω	6.35-mm (1/4”) jack socket
Output connections	External speaker (min. impedance 8 Ω)

HT fuse: T315 mA L250V

---|---
Dimensions (W × H × D)| 510 mm × 230 mm × 247 mm
Weight| 8 kg
Ambient conditions| Temperature range| 0 °C…40 °C
Relative humidity| 20 %…80 % (non-condensing)

Further information

Plug and connection assignment

Introduction

This chapter will help you select the right cables and plugs to connect your valuable equipment in such a way that a perfect sound experience is ensured. Please note this advice, because especially in ‘Sound & Light’ caution is indicated: Even if a plug fits into the socket, an incorrect connection may result in a destroyed power amp, a short circuit or ‘just’ in poor transmission quality!

Balanced and unbalanced transmission

Unbalanced transmission is mainly used in semi-professional environment and in hifi use. Instrument cables with two conductors (one core plus shielding) are typical representatives of the unbalanced transmission. One conductor is ground and shielding while the signal is transmitted through the core. Unbalanced transmission is susceptible to electromagnetic interference, especially at low levels, such as microphone signals and when using long cables. In a professional environment, therefore, the balanced transmission is preferred, because this enables an undisturbed transmission of signals over long distances. In addition to the conductors ‘Ground’ and ‘Signal’, in a balanced transmission, a second core is added. This also transfers the signal but phase-shifted by 180°. Since the interference affects both cores equally, by subtracting the phase-shifted signals, the interfering signal is completely neutralized. The result is a pure signal without any noise interference . Harley-Benton-TUBE30-Head-Guitar-Amp-Head-fig-3

Protecting the environment

Disposal of the packaging material

For the transport and protective packaging, environmentally friendly materials have been chosen that can be supplied to normal recycling. Ensure that plastic bags, packaging, etc. are properly disposed of. Do not just dispose of these materials with your normal household waste, but make sure that they are collected for recycling. Please follow the notes and markings on the packaging.

Disposal of your old device

This product is subject to the European Waste Electrical and Electronic Equipment Directive (WEEE) in its currently valid version. Do not dispose of your normal household waste. Dispose of this device through an approved waste disposal firm or through your local waste facility. When discarding the device, comply with the rules and regulations that apply in your country. If in doubt, consult your local waste disposal facility.